blob: e77e3d3e0094b0f895bcc6a00e1445c97ba0a350 [file] [log] [blame]
//>>SLICER
// RUN: clang-cc -analyze -checker-cfref -analyzer-store=basic -verify %s &&
// RUN: clang-cc -analyze -checker-cfref -analyzer-store=region -verify %s
#if __has_feature(attribute_ns_returns_retained)
#define NS_RETURNS_RETAINED __attribute__((ns_returns_retained))
#endif
#if __has_feature(attribute_cf_returns_retained)
#define CF_RETURNS_RETAINED __attribute__((cf_returns_retained))
#endif
//===----------------------------------------------------------------------===//
// The following code is reduced using delta-debugging from Mac OS X headers:
//
// #include <Cocoa/Cocoa.h>
// #include <CoreFoundation/CoreFoundation.h>
// #include <DiskArbitration/DiskArbitration.h>
// #include <QuartzCore/QuartzCore.h>
// #include <Quartz/Quartz.h>
// #include <IOKit/IOKitLib.h>
//
// It includes the basic definitions for the test cases below.
//===----------------------------------------------------------------------===//
typedef unsigned int __darwin_natural_t;
typedef unsigned long uintptr_t;
typedef unsigned int uint32_t;
typedef unsigned long long uint64_t;
typedef unsigned int UInt32;
typedef signed long CFIndex;
typedef const void * CFTypeRef;
typedef const struct __CFString * CFStringRef;
typedef const struct __CFAllocator * CFAllocatorRef;
extern const CFAllocatorRef kCFAllocatorDefault;
extern CFTypeRef CFRetain(CFTypeRef cf);
extern void CFRelease(CFTypeRef cf);
typedef struct {
}
CFArrayCallBacks;
extern const CFArrayCallBacks kCFTypeArrayCallBacks;
typedef const struct __CFArray * CFArrayRef;
typedef struct __CFArray * CFMutableArrayRef;
extern CFMutableArrayRef CFArrayCreateMutable(CFAllocatorRef allocator, CFIndex capacity, const CFArrayCallBacks *callBacks);
extern const void *CFArrayGetValueAtIndex(CFArrayRef theArray, CFIndex idx);
extern void CFArrayAppendValue(CFMutableArrayRef theArray, const void *value);
typedef const struct __CFDictionary * CFDictionaryRef;
typedef struct __CFDictionary * CFMutableDictionaryRef;
typedef UInt32 CFStringEncoding;
enum {
kCFStringEncodingMacRoman = 0, kCFStringEncodingWindowsLatin1 = 0x0500, kCFStringEncodingISOLatin1 = 0x0201, kCFStringEncodingNextStepLatin = 0x0B01, kCFStringEncodingASCII = 0x0600, kCFStringEncodingUnicode = 0x0100, kCFStringEncodingUTF8 = 0x08000100, kCFStringEncodingNonLossyASCII = 0x0BFF , kCFStringEncodingUTF16 = 0x0100, kCFStringEncodingUTF16BE = 0x10000100, kCFStringEncodingUTF16LE = 0x14000100, kCFStringEncodingUTF32 = 0x0c000100, kCFStringEncodingUTF32BE = 0x18000100, kCFStringEncodingUTF32LE = 0x1c000100 };
extern CFStringRef CFStringCreateWithCString(CFAllocatorRef alloc, const char *cStr, CFStringEncoding encoding);
typedef double CFTimeInterval;
typedef CFTimeInterval CFAbsoluteTime;
extern CFAbsoluteTime CFAbsoluteTimeGetCurrent(void);
typedef const struct __CFDate * CFDateRef;
extern CFDateRef CFDateCreate(CFAllocatorRef allocator, CFAbsoluteTime at);
extern CFAbsoluteTime CFDateGetAbsoluteTime(CFDateRef theDate);
typedef __darwin_natural_t natural_t;
typedef natural_t mach_port_name_t;
typedef mach_port_name_t mach_port_t;
typedef int kern_return_t;
typedef kern_return_t mach_error_t;
typedef signed char BOOL;
typedef unsigned long NSUInteger;
@class NSString, Protocol;
extern void NSLog(NSString *format, ...) __attribute__((format(__NSString__, 1, 2)));
typedef struct _NSZone NSZone;
@class NSInvocation, NSMethodSignature, NSCoder, NSString, NSEnumerator;
@protocol NSObject - (BOOL)isEqual:(id)object;
- (id)retain;
- (oneway void)release;
- (id)autorelease;
@end @protocol NSCopying - (id)copyWithZone:(NSZone *)zone;
@end @protocol NSMutableCopying - (id)mutableCopyWithZone:(NSZone *)zone;
@end @protocol NSCoding - (void)encodeWithCoder:(NSCoder *)aCoder;
@end @interface NSObject <NSObject> {
}
+ (id)allocWithZone:(NSZone *)zone;
+ (id)alloc;
- (void)dealloc;
@end extern id NSAllocateObject(Class aClass, NSUInteger extraBytes, NSZone *zone);
typedef struct {
}
NSFastEnumerationState;
@protocol NSFastEnumeration - (NSUInteger)countByEnumeratingWithState:(NSFastEnumerationState *)state objects:(id *)stackbuf count:(NSUInteger)len;
@end @class NSString;
@interface NSArray : NSObject <NSCopying, NSMutableCopying, NSCoding, NSFastEnumeration> - (NSUInteger)count;
@end @interface NSArray (NSArrayCreation) + (id)array;
@end @interface NSAutoreleasePool : NSObject {
}
- (void)drain;
@end extern NSString * const NSBundleDidLoadNotification;
typedef double NSTimeInterval;
@interface NSDate : NSObject <NSCopying, NSCoding> - (NSTimeInterval)timeIntervalSinceReferenceDate;
@end typedef unsigned short unichar;
@interface NSString : NSObject <NSCopying, NSMutableCopying, NSCoding> - (NSUInteger)length;
- ( const char *)UTF8String;
- (id)initWithUTF8String:(const char *)nullTerminatedCString;
+ (id)stringWithUTF8String:(const char *)nullTerminatedCString;
@end @class NSString, NSData;
@interface NSData : NSObject <NSCopying, NSMutableCopying, NSCoding> - (NSUInteger)length;
+ (id)dataWithBytesNoCopy:(void *)bytes length:(NSUInteger)length;
+ (id)dataWithBytesNoCopy:(void *)bytes length:(NSUInteger)length freeWhenDone:(BOOL)b;
@end @class NSString;
@interface NSDictionary : NSObject <NSCopying, NSMutableCopying, NSCoding, NSFastEnumeration> - (NSUInteger)count;
@end @interface NSMutableDictionary : NSDictionary - (void)removeObjectForKey:(id)aKey;
- (void)setObject:(id)anObject forKey:(id)aKey;
@end @interface NSMutableDictionary (NSMutableDictionaryCreation) + (id)dictionaryWithCapacity:(NSUInteger)numItems;
@end typedef double CGFloat;
struct CGSize {
};
typedef struct CGSize CGSize;
struct CGRect {
};
typedef struct CGRect CGRect;
@protocol NSLocking - (void)lock;
- (id)init;
@end @class NSURLAuthenticationChallenge;
typedef mach_port_t io_object_t;
typedef char io_name_t[128];
typedef io_object_t io_iterator_t;
typedef io_object_t io_service_t;
typedef struct IONotificationPort * IONotificationPortRef;
typedef void (*IOServiceMatchingCallback)( void * refcon, io_iterator_t iterator );
io_service_t IOServiceGetMatchingService( mach_port_t masterPort, CFDictionaryRef matching );
kern_return_t IOServiceGetMatchingServices( mach_port_t masterPort, CFDictionaryRef matching, io_iterator_t * existing );
kern_return_t IOServiceAddNotification( mach_port_t masterPort, const io_name_t notificationType, CFDictionaryRef matching, mach_port_t wakePort, uintptr_t reference, io_iterator_t * notification ) __attribute__((deprecated));
kern_return_t IOServiceAddMatchingNotification( IONotificationPortRef notifyPort, const io_name_t notificationType, CFDictionaryRef matching, IOServiceMatchingCallback callback, void * refCon, io_iterator_t * notification );
CFMutableDictionaryRef IOServiceMatching( const char * name );
CFMutableDictionaryRef IOServiceNameMatching( const char * name );
CFMutableDictionaryRef IOBSDNameMatching( mach_port_t masterPort, uint32_t options, const char * bsdName );
CFMutableDictionaryRef IOOpenFirmwarePathMatching( mach_port_t masterPort, uint32_t options, const char * path );
CFMutableDictionaryRef IORegistryEntryIDMatching( uint64_t entryID );
typedef struct __DASession * DASessionRef;
extern DASessionRef DASessionCreate( CFAllocatorRef allocator );
typedef struct __DADisk * DADiskRef;
extern DADiskRef DADiskCreateFromBSDName( CFAllocatorRef allocator, DASessionRef session, const char * name );
extern DADiskRef DADiskCreateFromIOMedia( CFAllocatorRef allocator, DASessionRef session, io_service_t media );
extern CFDictionaryRef DADiskCopyDescription( DADiskRef disk );
extern DADiskRef DADiskCopyWholeDisk( DADiskRef disk );
typedef struct CGColorSpace *CGColorSpaceRef;
typedef struct CGImage *CGImageRef;
typedef struct CGLayer *CGLayerRef;
@class NSArray, NSError, NSEvent, NSMenu, NSUndoManager, NSWindow;
@interface NSResponder : NSObject <NSCoding> {
}
@end @protocol NSAnimatablePropertyContainer - (id)animator;
@end extern NSString *NSAnimationTriggerOrderIn ;
@interface NSView : NSResponder <NSAnimatablePropertyContainer> {
struct __VFlags2 {
}
_vFlags2;
}
@end extern NSString * const NSFullScreenModeAllScreens;
@protocol NSChangeSpelling - (void)changeSpelling:(id)sender;
@end @protocol NSIgnoreMisspelledWords - (void)ignoreSpelling:(id)sender;
@end @class NSColor, NSFont, NSNotification;
@interface NSText : NSView <NSChangeSpelling, NSIgnoreMisspelledWords> {
}
@end @protocol NSValidatedUserInterfaceItem - (SEL)action;
@end @protocol NSUserInterfaceValidations - (BOOL)validateUserInterfaceItem:(id <NSValidatedUserInterfaceItem>)anItem;
@end @class NSArray, NSError, NSImage, NSView, NSNotificationCenter, NSURL, NSScreen, NSRunningApplication;
@interface NSApplication : NSResponder <NSUserInterfaceValidations> {
}
@end enum {
NSTerminateCancel = 0, NSTerminateNow = 1, NSTerminateLater = 2 };
typedef NSUInteger NSApplicationTerminateReply;
@protocol NSApplicationDelegate <NSObject> @optional - (NSApplicationTerminateReply)applicationShouldTerminate:(NSApplication *)sender;
@end enum {
}
_CFlags;
@interface CIImage : NSObject <NSCoding, NSCopying> {
}
typedef int CIFormat;
@end enum {
kDAReturnSuccess = 0, kDAReturnError = (((0x3e)&0x3f)<<26) | (((0x368)&0xfff)<<14) | 0x01, kDAReturnBusy = (((0x3e)&0x3f)<<26) | (((0x368)&0xfff)<<14) | 0x02, kDAReturnBadArgument = (((0x3e)&0x3f)<<26) | (((0x368)&0xfff)<<14) | 0x03, kDAReturnExclusiveAccess = (((0x3e)&0x3f)<<26) | (((0x368)&0xfff)<<14) | 0x04, kDAReturnNoResources = (((0x3e)&0x3f)<<26) | (((0x368)&0xfff)<<14) | 0x05, kDAReturnNotFound = (((0x3e)&0x3f)<<26) | (((0x368)&0xfff)<<14) | 0x06, kDAReturnNotMounted = (((0x3e)&0x3f)<<26) | (((0x368)&0xfff)<<14) | 0x07, kDAReturnNotPermitted = (((0x3e)&0x3f)<<26) | (((0x368)&0xfff)<<14) | 0x08, kDAReturnNotPrivileged = (((0x3e)&0x3f)<<26) | (((0x368)&0xfff)<<14) | 0x09, kDAReturnNotReady = (((0x3e)&0x3f)<<26) | (((0x368)&0xfff)<<14) | 0x0A, kDAReturnNotWritable = (((0x3e)&0x3f)<<26) | (((0x368)&0xfff)<<14) | 0x0B, kDAReturnUnsupported = (((0x3e)&0x3f)<<26) | (((0x368)&0xfff)<<14) | 0x0C };
typedef mach_error_t DAReturn;
typedef const struct __DADissenter * DADissenterRef;
extern DADissenterRef DADissenterCreate( CFAllocatorRef allocator, DAReturn status, CFStringRef string );
@interface CIContext: NSObject {
}
- (CGImageRef)createCGImage:(CIImage *)im fromRect:(CGRect)r;
- (CGImageRef)createCGImage:(CIImage *)im fromRect:(CGRect)r format:(CIFormat)f colorSpace:(CGColorSpaceRef)cs;
- (CGLayerRef)createCGLayerWithSize:(CGSize)size info:(CFDictionaryRef)d;
@end @class NSURL;
@protocol QCCompositionRenderer - (NSDictionary*) attributes;
@end @interface QCRenderer : NSObject <QCCompositionRenderer> {
}
- (id) createSnapshotImageOfType:(NSString*)type;
@end extern NSString* const QCViewDidStartRenderingNotification;
@interface QCView : NSView <QCCompositionRenderer> {
}
- (id) createSnapshotImageOfType:(NSString*)type;
@end enum {
ICEXIFOrientation1 = 1, ICEXIFOrientation2 = 2, ICEXIFOrientation3 = 3, ICEXIFOrientation4 = 4, ICEXIFOrientation5 = 5, ICEXIFOrientation6 = 6, ICEXIFOrientation7 = 7, ICEXIFOrientation8 = 8, };
@class ICDevice;
@protocol ICDeviceDelegate <NSObject> @required - (void)didRemoveDevice:(ICDevice*)device;
@end @class ICCameraDevice;
@class ICScannerDevice;
@protocol ICScannerDeviceDelegate <ICDeviceDelegate> @optional - (void)scannerDeviceDidBecomeAvailable:(ICScannerDevice*)scanner;
@end
//===----------------------------------------------------------------------===//
// Test cases.
//===----------------------------------------------------------------------===//
CFAbsoluteTime f1() {
CFAbsoluteTime t = CFAbsoluteTimeGetCurrent();
CFDateRef date = CFDateCreate(0, t);
CFRetain(date);
CFRelease(date);
CFDateGetAbsoluteTime(date); // no-warning
CFRelease(date);
t = CFDateGetAbsoluteTime(date); // expected-warning{{Reference-counted object is used after it is released.}}
return t;
}
CFAbsoluteTime f2() {
CFAbsoluteTime t = CFAbsoluteTimeGetCurrent();
CFDateRef date = CFDateCreate(0, t);
[((NSDate*) date) retain];
CFRelease(date);
CFDateGetAbsoluteTime(date); // no-warning
[((NSDate*) date) release];
t = CFDateGetAbsoluteTime(date); // expected-warning{{Reference-counted object is used after it is released.}}
return t;
}
NSDate* global_x;
// Test to see if we supresss an error when we store the pointer
// to a global.
CFAbsoluteTime f3() {
CFAbsoluteTime t = CFAbsoluteTimeGetCurrent();
CFDateRef date = CFDateCreate(0, t);
[((NSDate*) date) retain];
CFRelease(date);
CFDateGetAbsoluteTime(date); // no-warning
global_x = (NSDate*) date;
[((NSDate*) date) release];
t = CFDateGetAbsoluteTime(date); // no-warning
return t;
}
//---------------------------------------------------------------------------
// Test case 'f4' differs for region store and basic store. See
// retain-release-region-store.m and retain-release-basic-store.m.
//---------------------------------------------------------------------------
// Test a leak.
CFAbsoluteTime f5(int x) {
CFAbsoluteTime t = CFAbsoluteTimeGetCurrent();
CFDateRef date = CFDateCreate(0, t); // expected-warning{{leak}}
if (x)
CFRelease(date);
return t;
}
// Test a leak involving the return.
CFDateRef f6(int x) {
CFDateRef date = CFDateCreate(0, CFAbsoluteTimeGetCurrent()); // expected-warning{{leak}}
CFRetain(date);
return date;
}
// Test a leak involving an overwrite.
CFDateRef f7() {
CFDateRef date = CFDateCreate(0, CFAbsoluteTimeGetCurrent()); //expected-warning{{leak}}
CFRetain(date);
date = CFDateCreate(0, CFAbsoluteTimeGetCurrent());
return date;
}
// Generalization of Create rule. MyDateCreate returns a CFXXXTypeRef, and
// has the word create.
CFDateRef MyDateCreate();
CFDateRef f8() {
CFDateRef date = MyDateCreate(); // expected-warning{{leak}}
CFRetain(date);
return date;
}
CFDateRef f9() {
CFDateRef date = CFDateCreate(0, CFAbsoluteTimeGetCurrent());
int *p = 0;
// When allocations fail, CFDateCreate can return null.
if (!date) *p = 1; // expected-warning{{null}}
return date;
}
// Handle DiskArbitration API:
//
// http://developer.apple.com/DOCUMENTATION/DARWIN/Reference/DiscArbitrationFramework/
//
void f10(io_service_t media, DADiskRef d, CFStringRef s) {
DADiskRef disk = DADiskCreateFromBSDName(kCFAllocatorDefault, 0, "hello"); // expected-warning{{leak}}
if (disk) NSLog(@"ok");
disk = DADiskCreateFromIOMedia(kCFAllocatorDefault, 0, media); // expected-warning{{leak}}
if (disk) NSLog(@"ok");
CFDictionaryRef dict = DADiskCopyDescription(d); // expected-warning{{leak}}
if (dict) NSLog(@"ok");
disk = DADiskCopyWholeDisk(d); // expected-warning{{leak}}
if (disk) NSLog(@"ok");
DADissenterRef dissenter = DADissenterCreate(kCFAllocatorDefault, // expected-warning{{leak}}
kDAReturnSuccess, s);
if (dissenter) NSLog(@"ok");
DASessionRef session = DASessionCreate(kCFAllocatorDefault); // expected-warning{{leak}}
if (session) NSLog(@"ok");
}
// Test retain/release checker with CFString and CFMutableArray.
void f11() {
// Create the array.
CFMutableArrayRef A = CFArrayCreateMutable(0, 10, &kCFTypeArrayCallBacks);
// Create a string.
CFStringRef s1 = CFStringCreateWithCString(0, "hello world",
kCFStringEncodingUTF8);
// Add the string to the array.
CFArrayAppendValue(A, s1);
// Decrement the reference count.
CFRelease(s1); // no-warning
// Get the string. We don't own it.
s1 = (CFStringRef) CFArrayGetValueAtIndex(A, 0);
// Release the array.
CFRelease(A); // no-warning
// Release the string. This is a bug.
CFRelease(s1); // expected-warning{{Incorrect decrement of the reference count}}
}
// PR 3337: Handle functions declared using typedefs.
typedef CFTypeRef CREATEFUN();
CREATEFUN MyCreateFun;
void f12() {
CFTypeRef o = MyCreateFun(); // expected-warning {{leak}}
}
void f13_autorelease() {
CFMutableArrayRef A = CFArrayCreateMutable(0, 10, &kCFTypeArrayCallBacks); // no-warning
[(id) A autorelease]; // no-warning
}
void f13_autorelease_b() {
CFMutableArrayRef A = CFArrayCreateMutable(0, 10, &kCFTypeArrayCallBacks);
[(id) A autorelease];
[(id) A autorelease]; // expected-warning{{Object sent -autorelease too many times}}
}
CFMutableArrayRef f13_autorelease_c() {
CFMutableArrayRef A = CFArrayCreateMutable(0, 10, &kCFTypeArrayCallBacks);
[(id) A autorelease];
[(id) A autorelease];
return A; // expected-warning{{Object sent -autorelease too many times}}
}
CFMutableArrayRef f13_autorelease_d() {
CFMutableArrayRef A = CFArrayCreateMutable(0, 10, &kCFTypeArrayCallBacks);
[(id) A autorelease];
[(id) A autorelease];
CFMutableArrayRef B = CFArrayCreateMutable(0, 10, &kCFTypeArrayCallBacks); // expected-warning{{Object sent -autorelease too many times}}
CFRelease(B); // no-warning
while (1) {}
}
// This case exercises the logic where the leak site is the same as the allocation site.
void f14_leakimmediately() {
CFArrayCreateMutable(0, 10, &kCFTypeArrayCallBacks); // expected-warning{{leak}}
}
// Test that we track an allocated object beyond the point where the *name*
// of the variable storing the reference is no longer live.
void f15() {
// Create the array.
CFMutableArrayRef A = CFArrayCreateMutable(0, 10, &kCFTypeArrayCallBacks);
CFMutableArrayRef *B = &A;
// At this point, the name 'A' is no longer live.
CFRelease(*B); // no-warning
}
// Test when we pass NULL to CFRetain/CFRelease.
void f16(int x, CFTypeRef p) {
if (p)
return;
if (x) {
CFRelease(p); // expected-warning{{Null pointer argument in call to CFRelease}}
}
else {
CFRetain(p); // expected-warning{{Null pointer argument in call to CFRetain}}
}
}
// Test basic tracking of ivars associated with 'self'. For the retain/release
// checker we currently do not want to flag leaks associated with stores
// of tracked objects to ivars.
@interface SelfIvarTest : NSObject {
id myObj;
}
- (void)test_self_tracking;
@end
@implementation SelfIvarTest
- (void)test_self_tracking {
myObj = (id) CFArrayCreateMutable(0, 10, &kCFTypeArrayCallBacks); // no-warning
}
@end
// Test return of non-owned objects in contexts where an owned object
// is expected.
@interface TestReturnNotOwnedWhenExpectedOwned
- (NSString*)newString;
@end
@implementation TestReturnNotOwnedWhenExpectedOwned
- (NSString*)newString {
NSString *s = [NSString stringWithUTF8String:"hello"];
return s; // expected-warning{{Object with +0 retain counts returned to caller where a +1 (owning) retain count is expected}}
}
@end
// <rdar://problem/6659160>
int isFoo(char c);
static void rdar_6659160(char *inkind, char *inname)
{
// We currently expect that [NSObject alloc] cannot fail. This
// will be a toggled flag in the future. It can indeed return null, but
// Cocoa programmers generally aren't expected to reason about out-of-memory
// conditions.
NSString *kind = [[NSString alloc] initWithUTF8String:inkind]; // expected-warning{{leak}}
// We do allow stringWithUTF8String to fail. This isn't really correct, as
// far as returning 0. In most error conditions it will throw an exception.
// If allocation fails it could return 0, but again this
// isn't expected.
NSString *name = [NSString stringWithUTF8String:inname];
if(!name)
return;
const char *kindC = 0;
const char *nameC = 0;
// In both cases, we cannot reach a point down below where we
// dereference kindC or nameC with either being null. This is because
// we assume that [NSObject alloc] doesn't fail and that we have the guard
// up above.
if(kind)
kindC = [kind UTF8String];
if(name)
nameC = [name UTF8String];
if(!isFoo(kindC[0])) // expected-warning{{null}}
return;
if(!isFoo(nameC[0])) // no-warning
return;
[kind release];
[name release]; // expected-warning{{Incorrect decrement of the reference count}}
}
// PR 3677 - 'allocWithZone' should be treated as following the Cocoa naming
// conventions with respect to 'return'ing ownership.
@interface PR3677: NSObject @end
@implementation PR3677
+ (id)allocWithZone:(NSZone *)inZone {
return [super allocWithZone:inZone]; // no-warning
}
@end
// PR 3820 - Reason about calls to -dealloc
void pr3820_DeallocInsteadOfRelease(void)
{
id foo = [[NSString alloc] init]; // no-warning
[foo dealloc];
// foo is not leaked, since it has been deallocated.
}
void pr3820_ReleaseAfterDealloc(void)
{
id foo = [[NSString alloc] init];
[foo dealloc];
[foo release]; // expected-warning{{used after it is release}}
// NSInternalInconsistencyException: message sent to deallocated object
}
void pr3820_DeallocAfterRelease(void)
{
NSLog(@"\n\n[%s]", __FUNCTION__);
id foo = [[NSString alloc] init];
[foo release];
[foo dealloc]; // expected-warning{{used after it is released}}
// message sent to released object
}
// From <rdar://problem/6704930>. The problem here is that 'length' binds to
// '($0 - 1)' after '--length', but SimpleConstraintManager doesn't know how to
// reason about '($0 - 1) > constant'. As a temporary hack, we drop the value
// of '($0 - 1)' and conjure a new symbol.
void rdar6704930(unsigned char *s, unsigned int length) {
NSString* name = 0;
if (s != 0) {
if (length > 0) {
while (length > 0) {
if (*s == ':') {
++s;
--length;
name = [[NSString alloc] init]; // no-warning
break;
}
++s;
--length;
}
if ((length == 0) && (name != 0)) {
[name release];
name = 0;
}
if (length == 0) { // no ':' found -> use it all as name
name = [[NSString alloc] init]; // no-warning
}
}
}
if (name != 0) {
[name release];
}
}
//===----------------------------------------------------------------------===//
// <rdar://problem/6833332>
// One build of the analyzer accidentally stopped tracking the allocated
// object after the 'retain'.
//===----------------------------------------------------------------------===//
@interface rdar_6833332 : NSObject <NSApplicationDelegate> {
NSWindow *window;
}
@property (nonatomic, retain) NSWindow *window;
@end
@implementation rdar_6833332
@synthesize window;
- (void)applicationDidFinishLaunching:(NSNotification *)aNotification {
NSMutableDictionary *dict = [[NSMutableDictionary dictionaryWithCapacity:4] retain]; // expected-warning{{leak}}
[dict setObject:@"foo" forKey:@"bar"];
NSLog(@"%@", dict);
}
- (void)dealloc {
[window release];
[super dealloc];
}
@end
//===----------------------------------------------------------------------===//
// <rdar://problem/6257780> clang checker fails to catch use-after-release
//===----------------------------------------------------------------------===//
int rdar_6257780_Case1() {
NSAutoreleasePool * pool = [[NSAutoreleasePool alloc] init];
NSArray *array = [NSArray array];
[array release]; // expected-warning{{Incorrect decrement of the reference count of an object is not owned at this point by the caller}}
[pool drain];
return 0;
}
//===----------------------------------------------------------------------===//
// <rdar://problem/6866843> Checker should understand new/setObject:/release constructs
//===----------------------------------------------------------------------===//
void rdar_6866843() {
NSAutoreleasePool * pool = [[NSAutoreleasePool alloc] init];
NSMutableDictionary* dictionary = [[NSMutableDictionary alloc] init];
NSArray* array = [[NSArray alloc] init];
[dictionary setObject:array forKey:@"key"];
[array release];
// Using 'array' here should be fine
NSLog(@"array = %@\n", array); // no-warning
// Now the array is released
[dictionary release];
[pool drain];
}
//===----------------------------------------------------------------------===//
// <rdar://problem/6877235> Classes typedef-ed to CF objects should get the same treatment as CF objects
//===----------------------------------------------------------------------===//
typedef CFTypeRef OtherRef;
@interface RDar6877235 : NSObject {}
- (CFTypeRef)_copyCFTypeRef;
- (OtherRef)_copyOtherRef;
@end
@implementation RDar6877235
- (CFTypeRef)_copyCFTypeRef {
return [[NSString alloc] init]; // no-warning
}
- (OtherRef)_copyOtherRef {
return [[NSString alloc] init]; // no-warning
}
@end
//===----------------------------------------------------------------------===//
//<rdar://problem/6320065> false positive - init method returns an object owned by caller
//===----------------------------------------------------------------------===//
@interface RDar6320065 : NSObject {
NSString *_foo;
}
- (id)initReturningNewClass;
- (id)initReturningNewClassBad;
- (id)initReturningNewClassBad2;
@end
@interface RDar6320065Subclass : RDar6320065
@end
@implementation RDar6320065
- (id)initReturningNewClass {
[self release];
self = [[RDar6320065Subclass alloc] init]; // no-warning
return self;
}
- (id)initReturningNewClassBad {
[self release];
[[RDar6320065Subclass alloc] init]; // expected-warning {{leak}}
return self;
}
- (id)initReturningNewClassBad2 {
[self release];
self = [[RDar6320065Subclass alloc] init];
return [self autorelease]; // expected-warning{{Object with +0 retain counts returned to caller where a +1 (owning) retain count is expected}}
}
@end
@implementation RDar6320065Subclass
@end
int RDar6320065_test() {
RDar6320065 *test = [[RDar6320065 alloc] init]; // no-warning
[test release];
return 0;
}
//===----------------------------------------------------------------------===//
// <rdar://problem/6859457> [NSData dataWithBytesNoCopy] does not return a retained object
//===----------------------------------------------------------------------===//
@interface RDar6859457 : NSObject {}
- (NSString*) NoCopyString;
- (NSString*) noCopyString;
@end
@implementation RDar6859457
- (NSString*) NoCopyString { return [[NSString alloc] init]; } // no-warning
- (NSString*) noCopyString { return [[NSString alloc] init]; } // no-warning
@end
void test_RDar6859457(RDar6859457 *x, void *bytes, NSUInteger dataLength) {
[x NoCopyString]; // expected-warning{{leak}}
[x noCopyString]; // expected-warning{{leak}}
[NSData dataWithBytesNoCopy:bytes length:dataLength]; // no-warning
[NSData dataWithBytesNoCopy:bytes length:dataLength freeWhenDone:1]; // no-warning
}
//===----------------------------------------------------------------------===//
// PR 4230 - an autorelease pool is not necessarily leaked during a premature
// return
//===----------------------------------------------------------------------===//
static void PR4230(void)
{
NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init]; // no-warning
NSString *object = [[[NSString alloc] init] autorelease]; // no-warning
return;
}
//===----------------------------------------------------------------------===//
// Method name that has a null IdentifierInfo* for its first selector slot.
// This test just makes sure that we handle it.
//===----------------------------------------------------------------------===//
@interface TestNullIdentifier
@end
@implementation TestNullIdentifier
+ (id):(int)x, ... {
return [[NSString alloc] init]; // expected-warning{{leak}}
}
@end
//===----------------------------------------------------------------------===//
// <rdar://problem/6893565> don't flag leaks for return types that cannot be
// determined to be CF types
//===----------------------------------------------------------------------===//
// We don't know if 'struct s6893565' represents a Core Foundation type, so
// we shouldn't emit an error here.
typedef struct s6893565* TD6893565;
@interface RDar6893565 {}
-(TD6893565)newThing;
@end
@implementation RDar6893565
-(TD6893565)newThing {
return (TD6893565) [[NSString alloc] init]; // no-warning
}
@end
//===----------------------------------------------------------------------===//
// <rdar://problem/6902710> clang: false positives w/QC and CoreImage methods
//===----------------------------------------------------------------------===//
void rdar6902710(QCView *view, QCRenderer *renderer, CIContext *context,
NSString *str, CIImage *img, CGRect rect,
CIFormat form, CGColorSpaceRef cs) {
[view createSnapshotImageOfType:str]; // expected-warning{{leak}}
[renderer createSnapshotImageOfType:str]; // expected-warning{{leak}}
[context createCGImage:img fromRect:rect]; // expected-warning{{leak}}
[context createCGImage:img fromRect:rect format:form colorSpace:cs]; // expected-warning{{leak}}
}
//===----------------------------------------------------------------------===//
// <rdar://problem/6945561> -[CIContext createCGLayerWithSize:info:]
// misinterpreted by clang scan-build
//===----------------------------------------------------------------------===//
void rdar6945561(CIContext *context, CGSize size, CFDictionaryRef d) {
[context createCGLayerWithSize:size info:d]; // expected-warning{{leak}}
}
//===----------------------------------------------------------------------===//
// <rdar://problem/6961230> add knowledge of IOKit functions to retain/release
// checker
//===----------------------------------------------------------------------===//
void IOBSDNameMatching_wrapper(mach_port_t masterPort, uint32_t options, const char * bsdName) {
IOBSDNameMatching(masterPort, options, bsdName); // expected-warning{{leak}}
}
void IOServiceMatching_wrapper(const char * name) {
IOServiceMatching(name); // expected-warning{{leak}}
}
void IOServiceNameMatching_wrapper(const char * name) {
IOServiceNameMatching(name); // expected-warning{{leak}}
}
CF_RETURNS_RETAINED CFDictionaryRef CreateDict();
void IOServiceAddNotification_wrapper(mach_port_t masterPort, const io_name_t notificationType,
mach_port_t wakePort, uintptr_t reference, io_iterator_t * notification ) {
CFDictionaryRef matching = CreateDict();
CFRelease(matching);
IOServiceAddNotification(masterPort, notificationType, matching, // expected-warning{{used after it is released}} expected-warning{{deprecated}}
wakePort, reference, notification);
}
void IORegistryEntryIDMatching_wrapper(uint64_t entryID ) {
IORegistryEntryIDMatching(entryID); // expected-warning{{leak}}
}
void IOOpenFirmwarePathMatching_wrapper(mach_port_t masterPort, uint32_t options,
const char * path) {
IOOpenFirmwarePathMatching(masterPort, options, path); // expected-warning{{leak}}
}
void IOServiceGetMatchingService_wrapper(mach_port_t masterPort) {
CFDictionaryRef matching = CreateDict();
IOServiceGetMatchingService(masterPort, matching);
CFRelease(matching); // expected-warning{{used after it is released}}
}
void IOServiceGetMatchingServices_wrapper(mach_port_t masterPort, io_iterator_t *existing) {
CFDictionaryRef matching = CreateDict();
IOServiceGetMatchingServices(masterPort, matching, existing);
CFRelease(matching); // expected-warning{{used after it is released}}
}
void IOServiceAddMatchingNotification_wrapper(IONotificationPortRef notifyPort, const io_name_t notificationType,
IOServiceMatchingCallback callback, void * refCon, io_iterator_t * notification) {
CFDictionaryRef matching = CreateDict();
IOServiceAddMatchingNotification(notifyPort, notificationType, matching, callback, refCon, notification);
CFRelease(matching); // expected-warning{{used after it is released}}
}
//===----------------------------------------------------------------------===//
// Tests of ownership attributes.
//===----------------------------------------------------------------------===//
typedef NSString* MyStringTy;
@protocol FooP;
@interface TestOwnershipAttr : NSObject
- (NSString*) returnsAnOwnedString NS_RETURNS_RETAINED; // no-warning
- (NSString*) returnsAnOwnedCFString CF_RETURNS_RETAINED; // no-warning
- (MyStringTy) returnsAnOwnedTypedString NS_RETURNS_RETAINED; // no-warning
- (int) returnsAnOwnedInt NS_RETURNS_RETAINED; // expected-warning{{'ns_returns_retained' attribute only applies to functions or methods that return a pointer or Objective-C object}}
- (id<FooP>) returnsOwnedProt NS_RETURNS_RETAINED; // no-warning
@end
static int ownership_attribute_doesnt_go_here NS_RETURNS_RETAINED; // expected-warning{{'ns_returns_retained' attribute only applies to function or method types}}
void test_attr_1(TestOwnershipAttr *X) {
NSString *str = [X returnsAnOwnedString]; // expected-warning{{leak}}
}
void test_attr_1b(TestOwnershipAttr *X) {
NSString *str = [X returnsAnOwnedCFString]; // expected-warning{{leak}}
}
@interface MyClassTestCFAttr : NSObject {}
- (NSDate*) returnsCFRetained CF_RETURNS_RETAINED;
- (CFDateRef) returnsCFRetainedAsCF CF_RETURNS_RETAINED;
- (NSDate*) alsoReturnsRetained;
- (CFDateRef) alsoReturnsRetainedAsCF;
- (NSDate*) returnsNSRetained NS_RETURNS_RETAINED;
@end
CF_RETURNS_RETAINED
CFDateRef returnsRetainedCFDate() {
return CFDateCreate(0, CFAbsoluteTimeGetCurrent());
}
@implementation MyClassTestCFAttr
- (NSDate*) returnsCFRetained {
return (NSDate*) returnsRetainedCFDate(); // No leak.
}
- (CFDateRef) returnsCFRetainedAsCF {
return returnsRetainedCFDate(); // No leak.
}
- (NSDate*) alsoReturnsRetained {
return (NSDate*) returnsRetainedCFDate(); // expected-warning{{leak}}
}
- (CFDateRef) alsoReturnsRetainedAsCF {
return returnsRetainedCFDate(); // expected-warning{{leak}}
}
- (NSDate*) returnsNSRetained {
return (NSDate*) returnsRetainedCFDate(); // no-warning
}
@end